/lit/ - Literature

Why do the Hindus and Vedantins on this board get to have such comfy discussion without the interference of materialists? It seems like Hindus get to have threads on /lit/ where the materialists stay out and everyone accepts or at least doesn't outright deny things like reincarnation, subtle bodies, pranayama....etc, whereas every Buddhism thread is flooded with people who lose their shit at something like "The mind is the forerunner of all things," let alone something like rebirth or karma.
Why are materialists so interested in engaging in debate with Buddhism as if it isn't a religion with mystical aspects contradictory to materialism? What causes them to approach Buddhism as some sort of secular humanist philosophy based in Cartesian rationalism, and then hurl insults when they're disappointed that it isn't that?